789.215 rounded of to the nearest thousand​

Mary works for a company that ships packages and must measure the size of each box that needs to be shipped. mary measures a box and finds the length is 7 inches, the width is 14 inches, and the height is 15 inches. what is the volume of the box? [type your answer as a number.]

Ineed to know the answer right now! !

If t17 = 3 (t5) in an arithmetic progression, find t1 in terms of d.